Abstract: A foldable ramp according to an embodiment is configured to assist a movement of means of transportation which may be used by disabled people, such as a wheelchair. The foldable ramp may be used as a stand for a billboard, and the foldable ramp may be unfolded to be used as a ramp.

Abstract: Provided is a duct docking device for a ventilation seat of a vehicle. The duct docking device enables air to be easily blown to a seatback and a seat cushion with a passenger in a seat using only one blower by enabling a seatback duct mounted at the seatback and a seat cushion duct mounted at the seat cushion to be hermetically docked through a connector duct, etc. at an unfolded position of the seatback in which a passenger can sit, and by enabling the seatback duct mounted at the seatback and the seat cushion duct mounted at the seat cushion to be separated from each other at a folded position of the seatback in consideration of that there is no passenger in the seat.

Abstract: A manufacturing method of a semiconductor substrate includes forming a sacrificial layer on an upper surface of a base substrate, etching the sacrificial layer to form a plurality of concave portions and a plurality of convex portions, forming a growth suppression layer on the sacrificial layer, removing a portion of the growth suppression layer to expose an upper surface of the convex portion of the sacrificial layer, growing a semiconductor layer on the sacrificial layer, and separating the semiconductor layer from the sacrificial layer. The convex portions as a whole have a honeycomb shape, and the concave portion has a hexagonal shape, when viewed in a plan view.

Abstract: A light emitting device includes a substrate including gallium nitride, and a semiconductor layer disposed on the substrate, the semiconductor layer including an n-type nitride semiconductor layer, an active layer disposed on the n-type nitride semiconductor layer, and a p-type nitride semiconductor layer disposed on the active layer, in which an angle defined between a crystal growth plane of the substrate and an m-plane thereof is in a range of 3.5° to 6.

Abstract: A template for growing a semiconductor, a method of separating a growth substrate and a method of fabricating a light emitting device using the same are disclosed. The template for growing a semiconductor includes a growth substrate including a nitride substrate; a seed layer disposed on the growth substrate and including at least one trench; and a growth stop layer disposed on a bottom surface of the trench, wherein the trench includes an upper trench and a lower trench, and the upper trench has a smaller width than the lower trench.

Abstract: A light emitting device includes a substrate including gallium nitride, and a semiconductor layer disposed on the substrate, the semiconductor layer including an n-type nitride semiconductor layer, an active layer disposed on the n-type nitride semiconductor layer, and a p-type nitride semiconductor layer disposed on the active layer, in which an angle defined between a crystal growth plane of the substrate and an m-plane thereof is in a range of 3.5° to 6.

Abstract: A template for growing a semiconductor, a method of separating a growth substrate and a method of fabricating a light emitting device using the same are disclosed. The template for growing a semiconductor includes a growth substrate including a nitride substrate; a seed layer disposed on the growth substrate and including at least one trench; and a growth stop layer disposed on a bottom surface of the trench, wherein the trench includes an upper trench and a lower trench, and the upper trench has a smaller width than the lower trench.

Abstract: The present disclosure relates to a tuner capable of receiving a television broadcasting signal of a wide band having an operating frequency bandwidth of 48 MHz˜1 GHz, wherein the tuner filters a radio frequency (RF) signal outputted from the low noise amplifier using a tunable filter. The tunable filter includes according to an embodiment an inductor and a variable capacitor as passive elements to reject harmonics. The tuner includes a mixer which mixes an output signal of the tunable filter with a local oscillator signal and converts the mixed signal to an In-phase and Quadrature IF signal, where the converted IF signal of I channel and Q channel is processed through an IF signal processor and is converted to an appropriate signal by a demodulator.

Abstract: The present disclosure relates to a tuner capable of receiving a television broadcasting signal of a wide band having an operating frequency bandwidth of 48 MHz˜1 GHz, wherein the tuner filters a radio frequency (RF) signal outputted from the low noise amplifier using a tunable filter. The tunable filter includes according to an embodiment an inductor and a variable capacitor as passive elements to reject harmonics. The tuner includes a mixer which mixes an output signal of the tunable filter with a local oscillator signal and converts the mixed signal to an In-phase and Quadrature IF signal, where the converted IF signal of I channel and Q channel is processed through an IF signal processor and is converted to an appropriate signal by a demodulator.

Abstract: Disclosed is a method for producing demineralized bone matrix with improvement of releasing bone morphogenetic protein by irradiating the demineralized bone matrix, the demineralized bone matrix produced by the producing method, a method for extracting bone morphogenetic protein using the demineralized bone matrix, and the bone morphogenetic protein extracted by the extracting method. The demineralized bone matrix produced according to the present invention and the bone morphogenetic protein extracted by using the demineralized bone matrix can be advantageously used in manufacturing bone restorative implants, bone growth accelerating compositions, and/or health aids or supplementary food products.

Abstract: The present invention relates to a method for decoding and storing digital broadcasting signals which is capable of freely adjusting size and position of a broadcasting video window by preventing a frame buffer conflict between storing and fetching timing of the decoded data which can be occurred depending on the position and the size of the video window displayed on a screen, without expanding memory or upgrading speed of the decoder.

Abstract: The method and apparatus for eliminating noise in a video signal encoder according to the present invention divides an input video signal into a noise component and a pure video signal component and performs filtering gain control taking account of a rate of energy of the noise and pure signal, thereby performing the exact filtering with respect to an actual noise component and improving picture quality. The present invention also extracts a noise filtered signal component in advance, performs filtering of the remaining signal through gain control, and combines the extracted pure signal component and the filtered remaining signal, thereby eliminating the noise while keeping the resolution of the signal. If the video signal is processed in the unit of blocks, the noise filtering is performed considering this fact, thereby reducing blocking effect and improving picture quality.

Abstract: A motion prediction method and apparatus that can reduce an input/output band width during a single-pixel estimation and a half-pixel estimation employing a hierarchical algorithm. In the method and apparatus, a motion in a single pixel unit is repeatedly retrieved in accordance with a position information detected dependently at a plurality of layers with respect to an input image, and the input image is coded and decoded. Then, a motion in a single and half pixel unit for a decoded reconstructed image is estimated at a certain layer in the plurality of layers. The method and apparatus is capable of reducing a calculation amount required for the motion prediction in a single pixel unit as well as reducing an input/output band width during the single-pixel and half-pixel estimation employing the hierarchical algorithm.

Abstract: A digital image decoding apparatus wherein image coded in accordance with an image coding method adopting the discrete cosine transform (DCT) are decoded without generating blocking picture components. In the apparatus, a data decoder performs the inverted discrete cosine transform (IDCT) for the image data coded in accordance with the coding method adopting the DCT to decode original image data. A selective filter selectively filters the decoded image data from the data decoder, thereby eliminating the blocking picture components.